Inflatable device



FIG. 1 is a top, front, right-side perspective view of an inflatable device;

FIG. 2 is a back, bottom, left-side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left-side view thereof;

FIG. 6 is a right-side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The dashed broken lines depict portions of the inflatable device that form no part of the claimed design. 

CLAIM The ornamental design for an inflatable device, as shown and described. 